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Finding the Fourth Proportional to 103,110.78, 154,679.25 and 36,537.90

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Solution

The fourth proportional to 103,110.78, 154,679.25 and 36,537.90 is: 54,811.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,110.78 : 154,679.25 = 36,537.90 : x
  2. Step 2: Convert to fraction form
    103,110.78/154,679.25 = 36,537.90/x
  3. Step 3: Cross multiply
    103,110.78x = 154,679.25 × 36,537.90
  4. Step 4: Simplify right side
    103,110.78x = 5,651,654,968.58
  5. Step 5: Solve for x
    x = 5,651,654,968.58/103,110.78
  6. Step 6: Final answer
    x = 54,811.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.